Caitlyn Jenner was defended on Instagram by her eldest son. According to a report from Us Weekly, Burt Jenner called out haters who keep blasting the former Olympian after transitioning into a woman.

A photo of Caitlyn Jenner was uploaded on the Instagram page of her 37-year-old son last Thursday. The image showed the former "Keeping Up with the Kardashians" patriarch playing with two young girls who were driving a pink toy car.

"So obviously a lot has changed... but thankfully, for me, the most important stuff didn't," Burt Jenner captioned the shot.

"My dad still loves toys, still loves to go fast... and will still whip your a** at... ANYTHING."

"Yup all you haters, my dad will still probably whip your ass at 65 with implants," he added.

Burt Jenner is the son of Caitlyn Jenner with her first wife, Chrystie Scott. The former couple divorced in 1981.

People recently reported how Caitlyn Jenner was also recognized in another Instagram post, this time by her 32-year-old son, Brody Jenner.

The photo posted by the disc jockey and TV heartthrob during his birthday last August showed his mother, Linda Thompson after giving birth to him. Caitlyn Jenner, who was still Bruce Jenner at that time, smiled beside his then-wife and the newborn baby Brody.

"Thank you @caitlynjenner and @ltlindathompson for the gift of life," he wrote alongside the touching image.

The posts of Caitlyn Jenner's sons on Instagram seemed to show how proud they are of their controversial dad.

According to a report from Digital Spy, the TV star's eldest children were once accused of being unsupportive when they declined to participate in her reality show, "I Am Cait."

"I [just] don't think you need to share every single bit of your personal life with the rest of the world," Brody Jenner explained.

"I believe in a little bit of privacy. That's nothing to do with me being unsupportive."